The standard of Iodine Content in Edible Salt is uniformly implemented throughout the country. The standard stipulates that the average iodine content of edible salt products is 20 mg/kg -30 mg/kg, but local health administrative departments can choose the average iodine content of edible salt suitable for local conditions according to the actual iodine nutrition level of local people.

The iodine content standard of edible salt formulated by the Health Department of Liaoning Province is: the iodine content of edible salt for ordinary residents is 25mg/kg 30% (the allowable fluctuation range is 18-33mg/kg), and the iodine content of special salt for pregnant women is 30mg/kg 30% (the allowable fluctuation range is 2 1-39mg/kg).

Wrong idea

Edible iodized salt is made by adding potassium iodate or potassium iodide in a certain proportion (iodine content per kilogram is 35 mg 15 mg). It contains trace iodine, which is one of the essential trace elements for human body and is known as an intellectual element. The content of iodine in human body is only about 30 mg, half of which is in thyroid and the rest is distributed in other tissues. Iodine is an important raw material for the synthesis of essential thyroid hormone, which affects the production, development and metabolism of the body, and the brain is its first target organ.

Iodine is the main raw material for synthesizing thyroxine in the body, and thyroxine protects thyroid from iodine in radioactive dust. Iodine will be quickly absorbed by human body, leading to cancer and hereditary diseases. The half-life of iodine is 8 days, which is quite harmful to human health. It will accumulate on the thyroid gland and cause cancer. If concentrated potassium iodide is ingested in time after a nuclear accident, the radiation of the thyroid gland can be reduced, thus reducing the risk of cancer.

Therefore, nuclear power plant workers only need to work, or people in nuclear pollution areas take iodine tablets, which can reduce the risk of cancer.